Ski fastening device



y 1932 A. J. GRESVIG 1,868,386

SKI FASTENING DEVICE Filed Feb. 21, 1931 UNITED STATES PATENT OFFICE AKSEL JOHAN GRESVIG, OF OSLO, NORWAY sKi FASTENING DEVICE Application filed February 21, 1931, Serial No. 517,614, and in Norway March 1, 1930.

The present invention relates to ski fastening devices of the kind, wherein two iron ears attached to the ski form bearings for pins passing from outside through the ears to their inner side in order to enter into a yielding locking engagement with the shoe sole.

According to this invention each of the said ski irons is made as a horizontal guide for the shoe sole and is provided with an inwardly directed portion which contacts with the top surface of the sole edge or with the top surface of a metallic mountingattached to the sole.

The ski is fixed simply by pushing the shoe forward in between the two guides, whereby the pins willfirstly be forced aside and then snap in again into engagement with the shoe sole.

When the ski isto be removed, the two pins are released in well-known manner. In order that this may be performed easily, the device according to the invention is so constructed that the two pins which pass from outside inwards through the guides constitute the two ends of a springy wire bow adapted to be swung forward into contact with the ski upperside, and on the exterior side of the guides projecting inclined mem- 39 bers are provided, their shape being thus that the bow branches are in contact with the inclined planes of said members during the swinging up of the bow and are forced thereby so far outwards opposite the spring action 7 that the bow pins are released from their engagement with the shoe sole.

An embodiment of the invention is illustrated in the accompanying drawing, wherein Fig. 1 is an elevation of the fastening device and. parts of shoe and ski. Fig. 2 is a plan view corresponding thereto. Fig. 3 is a cross sectional view on the line IIIIII of Fig. 2 looking in the direction of the arrows at the section line. Figs. 4-7 are perspective views showing different forms of a shoe mounting.

To the ski 1, preferably on its top surface, two horizontal guides 2 of U-shaped cross section are attached (see Fig. 3), said guides proper being located above each lateral side of the ski. These guides are located inclined to the ski middle line in such a manner (see Fig. 2) that the sole 4 of the shoe 3 may be pushed horizontally in between and into them as clearly shown in the drawing. The lateral edges of the sole will thereby pass in between the guides, so that the upper inturned top edge 5 thereof will contact with the top surface of the sole edge on a suitable length.

In order to retain the shoe in the guides a pin 6 is arranged for each guide. This pin passes from outside through a hole in the guide and tends by spring action to take its innermost position (Figs. 2, 3), wherein the pins 6 project a suitable distance beyond the inside of the guides and are retained in engagement with the shoe sole 4 or preferably with a metallic mounting 10 attached thereto.

According to Figs. 14 this mounting which is fastened in any suitable manner is so designed that an upper and a lower horizontal edge portion 7 and 8 respectively thereof project around the sole edge. Each mounting is provided with a hole or bore 9 of such a location that the pins 6 will automatically snap into these bores or holes 9 when the shoe 3 is pushed into the guides 2.

Consequently, the pins 6 serve only to prevent the shoe from being pulled backwards out from the guides, whereas the top edges 5 prevent the shoe 3 from moving upwards.

It will be obvious that the holes 9 and the pins 6 may be arranged at any height in relation to the shoe sole 4:. According to Fig. 5 the holes 9 are substituted by an open notch 11 on the top side of the sole 4 or of the mounting 10. According to Fig. 6 the notch 12 is arranged on the bottom side. Finally, according to Fig. 7 the hole is widened upwards and downwards, whereby the mounting 10 is formed by two separate parts 10a, 10b leaving a vertical slot 13 between them. In this case the mounting part lOamay be totally removed, if the parts are so adjusted that the mountings 106 have moved past the pins 6, j 11st at the moment the inclined or converging guides 2 are stopping the shoe in its foremost position.

he two pins 6, according to the invention,

are made as in-turned ends of a springy wirebow 14 which extends forwards in front of the shoe 3 and preferably engages the ski topside loosely. In this position either of the bow portions just before the pins 6 engages a projection 15 forming an inclined plane on the exterior side of the respective'guide. As the two bow branches tend to move towards one another by the spring-action of the wire, the

said inclined planes will, have the efiect to press the bow down upon the ski. The in clined planes on the projections 15 are so shaped and located that the two bow branches, when the bow ltis swung up into inclined position as indicated by dash-and-dot lines in Fig.1, are ascending the inclined planes and are forced to move together with the pins 6 horizontally outwards. In this position each bow branch falls into a small recess 16 made in the respective projection 15 and is thereby retained in this definitepositi'on, wherein the pins are retracted so much as to be without engagement with the shoe solet or its mountings. Theshoe may then without any hinconstitute lateral guides for the shoe, an inturned portion forming anintegral' part of each iron and making contact with the upper side of the: opposite shoe sole edge portions when the shoe is in position on'the ski so as toguide the shoehorizontally and prevent its upward movement'relatively to the ski when the shoe is pushed into the guides, in combination with spring-acted pins passing from outside through either iron into engage ment with the shoe sole when the same is in position in the device.

2. Ski fastening device comprising two spaced irons attached to the ski so as to constitute lateral guides for the shoe, an in-, turned portion on each iron making contact with the upper side of opposite metallic mountings attached to the shoe sole when the shoe is in position on the ski so as to guide the shoe horizontally and prevent its upward movement relatively to the ski when theshoe is pushed into the guides, and springwith the shoe when the same is in position on the ski, members arranged on'the outside of each iron and adapted to co-operatewith portions of the bow branches in such a manner as t-o force the pins out from engagement with the shoe sole during an upward swinging of the how about the pins as a fulcrum.

4. Ski fastening device comprising two spaced irons attached to the ski so as to constitute lateral guides for the shoe, a springy Wire bow having in-turned ends forming pins passing from outside through holes insaid irons and to thereby enter into engagement with the shoe when the same is in position on the ski, members arranged on the outside of each iron and provided with inclined planes co-operating with portions of the bow branches in such a manner as to force the pins out from engagement with the shoe sole during an upward swinging of the bow about the pins as a fulcrum.

. 5. Ski fastening device comprising two spaced irons attached to the ski so as to constitute lateral guides for the shoe, a springy wire bow having ineturncd ends forming pins passing from outside through holes in said irons and to thereby enter into engagement with the shoe when the same is in position on the ski, members arranged on the outside of each iron and provided with inclined planes co-operating with portions of the bow branches in such a manner asfto force the pins out from engagement with the shoe sole during an upward swinging of the bow about the pins as a fulcrum, each inclined planehaving a recess of such a location asto constitute a retaining bearing for the bow in the position,wherein the pins are retracted from engagement with the shoe.

6. Ski fastening device comprising two spaced irons attached to the ski so as to constitute lateral guides for the shoe, springy wire bow having in-turned ends forming pins passing from outside through holes in said irons and to thereby enter into engagement with the shoe when the same is inposition on the ski, members arranged on the outside of each iron and provided with inclined planes co-operating with portions of the bow branches in such a manner as to force the pins out from engagement with the shoe sole during an upward swinging of the bow about the pins as a fulcrum, each inclined plane 

